namespace Components {
    export namespace SubComponents {
        export class Test {}
    }

    export class Header {
        constructor() {
            const el = document.createElement('div');
            el.innerText = 'This is Header'
            document.body.appendChild(el);
        }
    }

    export class Content {
        constructor() {
            const el = document.createElement('div');
            el.innerText = 'This is Content'
            document.body.appendChild(el);
        }
    }

    export class Footer {
        constructor() {
            const el = document.createElement('div');
            el.innerText = 'This is Footer'
            document.body.appendChild(el);
        }
    }
}
